What is the purpose of AWS CloudFormation StackSets?

The purpose of AWS CloudFormation StackSets is to enable the deployment and management of CloudFormation stacks across multiple AWS accounts and Regions in a consistent and efficient manner. This capability is particularly useful for organizations that operate in a multi-account environment and require a standardized infrastructure deployment strategy across different geographic locations.

With StackSets, users can create, update, or delete stacks in several accounts and Regions simultaneously from a single template. This centralized approach not only simplifies resource management but also ensures that infrastructure configurations are uniform across various environments, which is crucial for governance and operational consistency.

The other options are related to functionalities that AWS provides but do not align specifically with the defined capabilities of StackSets. For example, while cost management may be addressed through other tools within AWS, it is not the core function of StackSets. Similarly, compliance with security policies and automation of virtual machine deployment pertain to different AWS services and concepts rather than StackSets specifically. Thus, the focus of StackSets is firmly on managing and deploying stacks across multiple accounts and Regions.